EP2568272A2 - Procédé de localisation acoustique de fuites dans des conduites - Google Patents

Procédé de localisation acoustique de fuites dans des conduites Download PDF

Info

Publication number
EP2568272A2
EP2568272A2 EP20120005611 EP12005611A EP2568272A2 EP 2568272 A2 EP2568272 A2 EP 2568272A2 EP 20120005611 EP20120005611 EP 20120005611 EP 12005611 A EP12005611 A EP 12005611A EP 2568272 A2 EP2568272 A2 EP 2568272A2
Authority
EP
European Patent Office
Prior art keywords
noise
value
frequency
leak
esa
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20120005611
Other languages
German (de)
English (en)
Other versions
EP2568272A3 (fr
Inventor
Harald Dr. Schuberth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seba Dynatronic Mess und Ortungstechnik GmbH
Original Assignee
Seba Dynatronic Mess und Ortungstechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seba Dynatronic Mess und Ortungstechnik GmbH filed Critical Seba Dynatronic Mess und Ortungstechnik GmbH
Publication of EP2568272A2 publication Critical patent/EP2568272A2/fr
Publication of EP2568272A3 publication Critical patent/EP2568272A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss
    • F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/002—Investigating fluid-tightness of structures by using thermal means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
    • G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0324—With control of flow by a condition or characteristic of a fluid

Definitions

  • the invention relates to a method for the acoustic location of leaks in subterranean or above-ground lines according to the preamble of claim 1.
  • the invention relates to a method for locating leaks in drinking water pipes or in other lines, which are traversed by a liquid medium.
  • Such lines are for example also above or below ground lines for kerosene supply at airports and the like lines in which flows a liquid medium.
  • the method according to the preamble of claim 1 is based on a method of the same applicant and refers to a permanent monitoring of lines, especially drinking water pipes.
  • Each noise data logger preferably operates with an acceleration sensor, which as a structure-borne sound microphone monitors the structure-borne noise on the flowing line, which changes when a leak occurs in the line and the leakage noise propagates along the line to be monitored.
  • an acceleration sensor which as a structure-borne sound microphone monitors the structure-borne noise on the flowing line, which changes when a leak occurs in the line and the leakage noise propagates along the line to be monitored.
  • the invention is therefore based on the object of developing a method for the acoustic location of leaks in lines in such a way that the analysis of the leakage noise and the associated frequency for the user is simplified and at the same time a qualitative statement about the leakage relevance of a measured signal can be made ,
  • the invention is characterized by the technical teaching of claim 1.
  • the essential feature is that the level of the leak noise and the frequency are combined into a single value, which is referred to below as the ESA value, which stands for "extended signal analysis”.
  • the user who evaluates the whole does not have the opportunity to evaluate all values, ie level and volume meaningful.
  • This is where the invention comes in, which for the first time gives the possibility to obtain a comprehensive overview of the leak on a map by means of a mathematical formula, the result of which is the Esa value, provided the individual locations of noise data loggers marked on a geographical area map , in each case the noise data logger drawn there is assigned an ESA value. From the size of the determined ESA value, a color representation is derived to further improve the graphical overview.
  • the marked as critical logger is located exactly above the leak. For this reason, the color representations of the loggers are evaluated visually, which are located in the vicinity of the marked as critical loggers. From the different colored marked loggers in the environment of the critical logger can then be closed with high probability on the leak.
  • the Esa formula with the two variables is thus an excellent indicator of the distance to the leak.
  • the frequency is logarithmized.
  • the level itself has already been calculated logarithmically during the acquisition. It is a value that can be between 0 and 60 dB.
  • the volume is accordingly a value between 0 and 60 dB.
  • the frequency is preferably in the range of 0-2,500 Hz and the volume is specified as 0-60 dB. When using the absolute volume level in dB, no calibration is required.
  • the measurement of the leak noise is carried out via acceleration sensors which are in direct physical contact with the pipe to be measured or the hydrant branching off from the pipe.
  • the tube may be made of a metal or plastic material.
  • the energy taken by the acceleration sensor is measured. It is therefore an acceleration value G.
  • One dB of the volume corresponds approximately to an acceleration of 10 micro G
  • Another embodiment of the invention provides to measure the volume instead of an acceleration sensor now with a hydrophone.
  • FIG. 1 schematically a measuring vehicle 1 is shown, which is connected via a wireless radio link with two noise data loggers 2, 3, which are brought into physical contact with a pipe laid underground 4 and with the aid of accelerometers or hydrophones the noise level and frequency on the casing of the pipe. 4 to capture.
  • the two mutually spaced noise data loggers 2, 3 detect accordingly both the noise level of the leaking leak 5 and the frequency and send the two values - together with other values - such.
  • the wireless data transmission 7, 8 illustrated here from the noise data loggers 2, 3 to the measuring vehicle 1 can, of course, also be implemented in another way, e.g. as a network to a central computer.
  • FIG. 2 shows the drinking water pipe 4, on whose left side the leak 5 has arisen and at the same time shows the noise level as a function of the frequency of the two noise data loggers 2, 3.
  • the noise data logger 2 which is arranged next to the leak 5, can detect both a large leak and a small leak, because the received signal in the higher frequency range also makes the small leak recognizable.
  • FIGS. 3 to 5 now show the advantages of the method according to the invention over the prior art.
  • FIG. 3 is again - according to FIG. 2 arranged on the left side of the pipe 5 to be detected leak 5, wherein the data acquisition is displayed on the noise data logger 2.
  • FIG. 4 In the overlying arranged FIG. 4 is given with the level value 15, that with a traditional noise level measurement only a distance up to the position 17 (see FIG. 5 ) can be detected by the leak 5.
  • an ESA value 14 is formed according to the formula according to the invention, it is possible that even at greater distances, namely between positions 17 and 18, after FIG. 5 , the leak is still detected.
  • threshold 13 was used to detect the leak FIG. 5 It can be seen that between positions 17 and 18, with conventional noise level measurement, it is no longer possible to detect the leak.
  • FIG. 5 shows therefore on the right side a triangular-shaped improvement curve 16, which makes it clear that even between the positions 17 and 18 in the evaluation of the ESA value still leak detection at greater distance from the leak is possible.
  • FIG. 6 shows an environment map 19 of a locality in which a pipeline 4 to be monitored is arranged, wherein a number of noise data loggers 2, 3, 20, 21, 22 are arranged along this pipeline 4.
  • the noise data logger 2 is assigned the highest ESA value 14 because the noise data logger 2 is closest to this leak. This is indicated on the environment map as yellow coloring of the noise data logger with the number 20112 is marked.
  • the downstream Noise Data Logger 3 with the number 20096 receives an orange coloration on the map, to make it clear that it is further away from the leak.
  • the location specified with the number 20097 as another noise data logger 20 on the map is then z. B. colored red to make it clear that this noise data logger 20 is further away from the leak.
  • the upstream noise data logger 21 is given a magenta color to make it clear that it is also near the leak 5.
  • ESA : log 10 fre * lev * 2 / 3 and in FIG. 7 specified separately.
  • the new ESA value consists of a multiplication of the decimal logarithm of the frequency 12 with the noise level 11 and a constant factor.
  • the last mentioned factor is merely a scaling factor that scales the determined ESA value 14 to a certain range.
  • the factor 2/3 instead of the factor 2/3, other factors such. B. 3/5 or 1/3 are used. Likewise, the factor can also be an integer. From the following calculations for the level lev and frequency fre, the ESA value is calculated
EP12005611.4A 2011-09-05 2012-08-02 Procédé de localisation acoustique de fuites dans des conduites Withdrawn EP2568272A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011112304 2011-09-05
DE201210003822 DE102012003822A1 (de) 2011-09-05 2012-02-25 Verfahren zur akustischen Ortung von Lecks in Leitungen

Publications (2)

Publication Number Publication Date
EP2568272A2 true EP2568272A2 (fr) 2013-03-13
EP2568272A3 EP2568272A3 (fr) 2017-08-16

Family

ID=46969919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12005611.4A Withdrawn EP2568272A3 (fr) 2011-09-05 2012-08-02 Procédé de localisation acoustique de fuites dans des conduites

Country Status (4)

Country Link
US (1) US8959983B2 (fr)
EP (1) EP2568272A3 (fr)
DE (1) DE102012003822A1 (fr)
MY (1) MY184388A (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10838837B2 (en) * 2016-06-24 2020-11-17 International Business Machines Corporation Sensor based system state prediction
US10690630B2 (en) 2017-04-21 2020-06-23 Mueller International, Llc Generation and utilization of pipe-specific sound attenuation
US10565752B2 (en) * 2017-04-21 2020-02-18 Mueller International, Llc Graphical mapping of pipe node location selection
US10209225B2 (en) 2017-04-21 2019-02-19 Mueller International, Llc Sound propagation comparison with automated frequency selection for pipe condition assessment
DE102017008010A1 (de) * 2017-08-25 2019-02-28 Dräger Safety AG & Co. KGaA Vorrichtung, Verfahren und Computerprogramm zur Messung der Entfernung zwischen einem Gasleck in einem Druckbehälter und einem Sensor
US10539480B2 (en) 2017-10-27 2020-01-21 Mueller International, Llc Frequency sub-band leak detection
CN110513603B (zh) * 2019-08-13 2021-09-28 常州大学 一种基于逆瞬态分析法的非金属管道泄漏定位方法
US10768146B1 (en) 2019-10-21 2020-09-08 Mueller International, Llc Predicting severity of buildup within pipes using evaluation of residual attenuation
US11726064B2 (en) 2020-07-22 2023-08-15 Mueller International Llc Acoustic pipe condition assessment using coherent averaging
US11609348B2 (en) 2020-12-29 2023-03-21 Mueller International, Llc High-resolution acoustic pipe condition assessment using in-bracket pipe excitation
CN114136437A (zh) * 2021-11-27 2022-03-04 上海满盛信息技术有限公司 一种基于物联网和机器学习的噪声探漏管理系统及方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046220A (en) * 1976-03-22 1977-09-06 Mobil Oil Corporation Method for distinguishing between single-phase gas and single-phase liquid leaks in well casings
DE3112829C2 (de) * 1981-03-31 1986-01-16 Seba-Dynatronic Mess- und Ortungstechnik gmbH, 8601 Baunach Verfahren und Geräte zur Ortung von Rohschäden mit wenigstens einem Mikrophon
DE3336245A1 (de) * 1983-10-05 1985-04-25 Kraftwerk Union AG, 4330 Mülheim Verfahren zum ermitteln einer leckstelle an druckfuehrenden behaeltern und einrichtung dazu
DE4227458A1 (de) * 1992-08-19 1994-02-24 Siemens Ag Verfahren und Einrichtung zur Ultraschall-Leckage-Ortung
US7891246B2 (en) * 2002-11-12 2011-02-22 Itron, Inc. Tracking vibrations in a pipeline network
DE102005033491A1 (de) * 2005-07-19 2007-01-25 Seba-Dynatronic Mess- Und Ortungstechnik Gmbh Verfahren zur Ortung von Leckgeräuschen
GB2444955A (en) * 2006-12-20 2008-06-25 Univ Sheffield Leak detection device for fluid filled pipelines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date
MY184388A (en) 2021-04-01
EP2568272A3 (fr) 2017-08-16
US8959983B2 (en) 2015-02-24
DE102012003822A1 (de) 2013-03-07
US20130213482A1 (en) 2013-08-22

Similar Documents

Publication Publication Date Title
EP2568272A2 (fr) Procédé de localisation acoustique de fuites dans des conduites
DE112012001851B4 (de) Ermitteln von Fluid-Leckagevolumen in Pipelines
DE2431907C3 (de) Verfahren und Vorrichtung zur Bestimmung von Konzentrationsprofilen flüssiger oder gasförmiger Stoffe längs einer Strecke
DE69630437T2 (de) Selbstkalibrierender durchflussmesser für offenen kanal
DE112011100419T5 (de) Datenverarbeitungsverfahren und -system zur Rohrleitungsleckageüberprüfung
EP2623999B1 (fr) Procédé de localisation d'une faute dans un câble de test et dispositif correspondant
EP2204660B1 (fr) Dispositif et procédé de détermination de déchargements partiels sur un composant électrique
DE60028260T2 (de) Anzeigeverfahren von Zeitdomänenreflektometermessungen
DE112010003671T5 (de) Wirbelgenerator für erweiterte Strömungsbereiche und schnellere Antwort
EP2041523B1 (fr) Dispositif de mesure servant à la mesure du débit dans un canal
DE2220539B2 (fr)
DE102005033491A1 (de) Verfahren zur Ortung von Leckgeräuschen
DE102015111642A1 (de) Durchflussmessgerät nach dem Wirbelzählerprinzip
DE2821711C2 (fr)
DE102013109128A1 (de) Hydrostatisches Grenzschichtmessgerät
WO2015181260A1 (fr) Procédé de détermination de la valeur d'une grandeur vibro-acoustique
EP2098836A2 (fr) Agencement de contrôle de prises d'eau
EP0015874B1 (fr) Procédé de détermination du taux de fuites
DE102011082487A1 (de) Verfahren und Sensoranordnung zum Messen des Drucks in einem Druckgefäß
DE102011050716B4 (de) Verfahren und Vorrichtung zur Online-Messung der Viskosität eines Fluids
DE102019108189A1 (de) Ultraschalldurchflussmessgerät, Verfahren zum Betreiben eines Ultraschall-Durchflussmessgeräts, Messverbund und Verfahren zum Betreiben eines Messverbunds
DE2807631A1 (de) Verfahren zur bestimmung von undichtigkeiten von im erdboden verlegten wasserleitungen
DE10110987B4 (de) Verfahren für die Bestimmung einer Leckrate
CN104808643A (zh) 一种基于改进的倒双谱分析的控制回路非线性检测方法
DE202009002338U1 (de) Anordnung zum Prüfen von Hydranten

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20130510

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: G01M 3/24 20060101AFI20170710BHEP

Ipc: G06F 17/10 20060101ALI20170710BHEP

Ipc: G01M 3/00 20060101ALI20170710BHEP

Ipc: F17D 5/06 20060101ALI20170710BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20180301